Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2004ECONOLINE E150, VAN CARGO, 4.6 WREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1393 (INTERIOR LIGHTING)DIAGNOSIS AND TESTINGINTERIOR LIGHTINGINSPECTION AND VERIFICATION
2004 Ford Econoline E150, Van Cargo, 4.6 W
Inspection and Verification
2004 Ford Econoline E150, Van Cargo, 4.6 WSECTION Inspection and Verification
WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
- Verify the customer concern.
- Visually inspect the following for obvious signs of mechanical or electrical damage.VISUAL INSPECTION CHART
Mechanical Electrical - Courtesy lamps
- Map lamps
- Luggage compartment lamp
- Vanity lamps
- Glove compartment lamp
- Smart junction box (SJB) fuse 3 (15A)
- Circuitry
- Courtesy lamps
- Map lamps
- Luggage compartment lamp
- Vanity lamps
- Glove compartment lamp
- SJB
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
- Check that the program card is correctly installed.
- Check the connections to the vehicle.
- Check the ignition switch position.
- If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
- Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
- CAN or UBP circuits fault; all electronic control units no response/not equipped, refer to MODULE COMMUNICATIONS NETWORK .
- No response/not equipped for the SJB, refer to MULTIFUNCTION ELECTRONIC CONTROL MODULES .
- System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out the self-test diagnostics for the SJB.
- If the DTCs retrieved are related to the concern, go to the SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) INDEX .
- If no DTCs related to the concern are retrieved, GO to SYMPTOM CHART .
SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) INDEX
| DTC | Description | Source | Action |
|---|---|---|---|
| B1320 | Driver Door Ajar Circuit Open | SJB | GO to PINPOINT TEST C . |
| B1328 | Passenger Door Ajar Circuit Open | SJB | GO to PINPOINT TEST C . |
| B1331 | Decklid Ajar Rear Door Circuit Failure | SJB | GO to PINPOINT TEST C . |
| B1336 | Door Ajar RR Circuit Open | SJB | GO to PINPOINT TEST C . |
| B1342 | ECU is Faulted | SJB | CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC CONTROL MODULES . TEST the system for normal operation. |
| B1572 | Door Ajar LR Circuit Open | SJB | GO to PINPOINT TEST C . |
| B1688 | Lamp Dome Input Circuit Short to Ground | SJB | GO to PINPOINT TEST J . |
| B2499 | Courtesy Lamp Output Failure | SJB | GO to PINPOINT TEST A . |
| All other DTCs | - | SJB | REFER to MULTIFUNCTION ELECTRONIC CONTROL MODULES . |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.